4423691161 has 4 divisors (see below), whose sum is σ = 4429414692. Its totient is φ = 4417967632.

The previous prime is 4423691149. The next prime is 4423691191. The reversal of 4423691161 is 1611963244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1736305561 + 2687385600 = 41669^2 + 51840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4423691161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4423691161.

It is not an unprimeable number, because it can be changed into a prime (4423691101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2860606 + ... + 2862151.

It is an arithmetic number, because the mean of its divisors is an integer number (1107353673).

Almost surely, 2^4423691161 is an apocalyptic number.

It is an amenable number.

4423691161 is a deficient number, since it is larger than the sum of its proper divisors (5723531).

4423691161 is an equidigital number, since it uses as much as digits as its factorization.

4423691161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723530.

The product of its digits is 31104, while the sum is 37.

The square root of 4423691161 is about 66510.8349143205. The cubic root of 4423691161 is about 1641.5782893815.

The spelling of 4423691161 in words is "four billion, four hundred twenty-three million, six hundred ninety-one thousand, one hundred sixty-one".